9-Aryl-phenalenones: Bioinspired thermally reversible photochromic compounds for photoswitching applications in the pico-to milliseconds range

Roger Bresolí-Obach, Walter A. Massad, Abasi Abudulimu, Larry Lüer, Cristina Flors, Javier G. Luis, Laura I. Rosquete, Teresa A. Grillo, Ommid Anamimoghadam, Götz Bucher, Santi Nonell

Research output: Indexed journal article Articlepeer-review

7 Citations (Scopus)

Abstract

Ultrafast photochromic molecules are being actively investigated to meet the demand for fast optical switching systems. Inspired on the irreversible cyclization of 9-phenylphenalenone plant metabolites to yield highly-coloured naphthoxanthenes for the purpose of defense against pathogens, aryl-substituted phenalenones have been developed that undergo a similar but reversible photochromic reaction. The lifetime of the naphthoxanthene photoisomer spans nine orders of magnitude, ranging from tens of picoseconds to tens of milliseconds depending on the electronic properties of the 9-aryl group.

Original languageEnglish
Article number109060
JournalDyes and Pigments
Volume186
DOIs
Publication statusPublished - Feb 2021

Keywords

  • Chromene
  • Phenalenone
  • Photochromic
  • Photoswitch
  • β-phenyl quenching

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